The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 1980
Filed:
Dec. 13, 1978
Eduard Knecht, Basel, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The invention relates to a trimellitic anhydride ester mixture which is suitable for lacquers and which is obtained by heating trimellitic anhydride together with a diol, in the molar ratio of 1:1 to 2:1, for at least 4 hours at 190.degree. to 250.degree. C., at an external pressure of 5 or 30 Torr for at least part of this time, and in the absence of a catalyst. The mixture is used as curing agent for the epoxide resin in a laquer containing epoxide resin and optionally pigments. The lacquer is used for the inside coating of tins (cans) for foodstuffs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile